The Mirage III R is a single seat, single-engine, supersonic all-weather reconnaissance variant of the Mirage IIIE delta-winged fighter. The nose is modified to carry five cameras. Radar and weapons were deleted.

The Dassault Mirage IIIE had a maximum speed of 2,350 kilometers per hour (1,460 miles per hour). Its service ceiling was 17,000 meters (55,774 feet), and its combat range was range 1,200 kilometers (746 miles).